<?php

namespace PHPExcel\Worksheet;

/**
 * \PHPExcel\Worksheet\AutoFilter
 *
 * Copyright (c) 2006 - 2015 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * @category PHPExcel
 * @package \PHPExcel\Worksheet
 * @copyright Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
 * @version ##VERSION##, ##DATE##
 */
class AutoFilter {
    /**
     * Autofilter Worksheet
     *
     * @var \PHPExcel\Worksheet
     */
    private $workSheet;
    
    /**
     * Autofilter Range
     *
     * @var string
     */
    private $range = '';
    
    /**
     * Autofilter Column Ruleset
     *
     * @var AutoFilter\Column[]
     */
    private $columns = array();
    
    /**
     * Create a new AutoFilter
     *
     * @param string $pRange
     *            Cell range (i.e. A1:E10)
     * @param \PHPExcel\Worksheet $pSheet            
     */
    public function __construct($pRange = '', \PHPExcel\Worksheet $pSheet = null) {
        $this->range = $pRange;
        $this->workSheet = $pSheet;
    }
    
    /**
     * Get AutoFilter Parent Worksheet
     *
     * @return \PHPExcel\Worksheet
     */
    public function getParent() {
        return $this->workSheet;
    }
    
    /**
     * Set AutoFilter Parent Worksheet
     *
     * @param \PHPExcel\Worksheet $pSheet            
     * @return AutoFilter
     */
    public function setParent(\PHPExcel\Worksheet $pSheet = null) {
        $this->workSheet = $pSheet;
        
        return $this;
    }
    
    /**
     * Get AutoFilter Range
     *
     * @return string
     */
    public function getRange() {
        return $this->range;
    }
    
    /**
     * Set AutoFilter Range
     *
     * @param string $pRange
     *            Cell range (i.e. A1:E10)
     * @throws \PHPExcel\Exception
     * @return AutoFilter
     */
    public function setRange($pRange = '') {
        // Uppercase coordinate
        $cellAddress = explode('!', strtoupper($pRange));
        if (count($cellAddress) > 1) {
            list($worksheet, $pRange) = $cellAddress;
        }
        
        if (strpos($pRange, ':') !== false) {
            $this->range = $pRange;
        } elseif (empty($pRange)) {
            $this->range = '';
        } else {
            throw new \PHPExcel\Exception('Autofilter must be set on a range of cells.');
        }
        
        if (empty($pRange)) {
            // Discard all column rules
            $this->columns = array();
        } else {
            // Discard any column rules that are no longer valid within this range
            list($rangeStart, $rangeEnd) = \PHPExcel\Cell::rangeBoundaries($this->range);
            foreach ( $this->columns as $key => $value ) {
                $colIndex = \PHPExcel\Cell::columnIndexFromString($key);
                if (($rangeStart[0] > $colIndex) || ($rangeEnd[0] < $colIndex)) {
                    unset($this->columns[$key]);
                }
            }
        }
        
        return $this;
    }
    
    /**
     * Get all AutoFilter Columns
     *
     * @throws \PHPExcel\Exception
     * @return AutoFilter\Column[]
     */
    public function getColumns() {
        return $this->columns;
    }
    
    /**
     * Validate that the specified column is in the AutoFilter range
     *
     * @param string $column
     *            Column name (e.g. A)
     * @throws \PHPExcel\Exception
     * @return integer The column offset within the autofilter range
     */
    public function testColumnInRange($column) {
        if (empty($this->range)) {
            throw new \PHPExcel\Exception("No autofilter range is defined.");
        }
        
        $columnIndex = \PHPExcel\Cell::columnIndexFromString($column);
        list($rangeStart, $rangeEnd) = \PHPExcel\Cell::rangeBoundaries($this->range);
        if (($rangeStart[0] > $columnIndex) || ($rangeEnd[0] < $columnIndex)) {
            throw new \PHPExcel\Exception("Column is outside of current autofilter range.");
        }
        
        return $columnIndex - $rangeStart[0];
    }
    
    /**
     * Get a specified AutoFilter Column Offset within the defined AutoFilter range
     *
     * @param string $pColumn
     *            Column name (e.g. A)
     * @throws \PHPExcel\Exception
     * @return integer The offset of the specified column within the autofilter range
     */
    public function getColumnOffset($pColumn) {
        return $this->testColumnInRange($pColumn);
    }
    
    /**
     * Get a specified AutoFilter Column
     *
     * @param string $pColumn
     *            Column name (e.g. A)
     * @throws \PHPExcel\Exception
     * @return AutoFilter\Column
     */
    public function getColumn($pColumn) {
        $this->testColumnInRange($pColumn);
        
        if (!isset($this->columns[$pColumn])) {
            $this->columns[$pColumn] = new AutoFilter\Column($pColumn, $this);
        }
        
        return $this->columns[$pColumn];
    }
    
    /**
     * Get a specified AutoFilter Column by it's offset
     *
     * @param integer $pColumnOffset
     *            Column offset within range (starting from 0)
     * @throws \PHPExcel\Exception
     * @return AutoFilter\Column
     */
    public function getColumnByOffset($pColumnOffset = 0) {
        list($rangeStart, $rangeEnd) = \PHPExcel\Cell::rangeBoundaries($this->range);
        $pColumn = \PHPExcel\Cell::stringFromColumnIndex($rangeStart[0] + $pColumnOffset - 1);
        
        return $this->getColumn($pColumn);
    }
    
    /**
     * Set AutoFilter
     *
     * @param AutoFilter\Column|string $pColumn
     *            A simple string containing a Column ID like 'A' is permitted
     * @throws \PHPExcel\Exception
     * @return AutoFilter
     */
    public function setColumn($pColumn) {
        if ((is_string($pColumn)) && (!empty($pColumn))) {
            $column = $pColumn;
        } elseif (is_object($pColumn) && ($pColumn instanceof AutoFilter\Column)) {
            $column = $pColumn->getColumnIndex();
        } else {
            throw new \PHPExcel\Exception("Column is not within the autofilter range.");
        }
        $this->testColumnInRange($column);
        
        if (is_string($pColumn)) {
            $this->columns[$pColumn] = new AutoFilter\Column($pColumn, $this);
        } elseif (is_object($pColumn) && ($pColumn instanceof AutoFilter\Column)) {
            $pColumn->setParent($this);
            $this->columns[$column] = $pColumn;
        }
        ksort($this->columns);
        
        return $this;
    }
    
    /**
     * Clear a specified AutoFilter Column
     *
     * @param string $pColumn
     *            Column name (e.g. A)
     * @throws \PHPExcel\Exception
     * @return AutoFilter
     */
    public function clearColumn($pColumn) {
        $this->testColumnInRange($pColumn);
        
        if (isset($this->columns[$pColumn])) {
            unset($this->columns[$pColumn]);
        }
        
        return $this;
    }
    
    /**
     * Shift an AutoFilter Column Rule to a different column
     *
     * Note: This method bypasses validation of the destination column to ensure it is within this AutoFilter range.
     * Nor does it verify whether any column rule already exists at $toColumn, but will simply overrideany existing value.
     * Use with caution.
     *
     * @param string $fromColumn
     *            Column name (e.g. A)
     * @param string $toColumn
     *            Column name (e.g. B)
     * @return AutoFilter
     */
    public function shiftColumn($fromColumn = null, $toColumn = null) {
        $fromColumn = strtoupper($fromColumn);
        $toColumn = strtoupper($toColumn);
        
        if (($fromColumn !== null) && (isset($this->columns[$fromColumn])) && ($toColumn !== null)) {
            $this->columns[$fromColumn]->setParent();
            $this->columns[$fromColumn]->setColumnIndex($toColumn);
            $this->columns[$toColumn] = $this->columns[$fromColumn];
            $this->columns[$toColumn]->setParent($this);
            unset($this->columns[$fromColumn]);
            
            ksort($this->columns);
        }
        
        return $this;
    }
    
    /**
     * Test if cell value is in the defined set of values
     *
     * @param mixed $cellValue            
     * @param mixed[] $dataSet            
     * @return boolean
     */
    private static function filterTestInSimpleDataSet($cellValue, $dataSet) {
        $dataSetValues = $dataSet['filterValues'];
        $blanks = $dataSet['blanks'];
        if (($cellValue == '') || ($cellValue === null)) {
            return $blanks;
        }
        return in_array($cellValue, $dataSetValues);
    }
    
    /**
     * Test if cell value is in the defined set of Excel date values
     *
     * @param mixed $cellValue            
     * @param mixed[] $dataSet            
     * @return boolean
     */
    private static function filterTestInDateGroupSet($cellValue, $dataSet) {
        $dateSet = $dataSet['filterValues'];
        $blanks = $dataSet['blanks'];
        if (($cellValue == '') || ($cellValue === null)) {
            return $blanks;
        }
        
        if (is_numeric($cellValue)) {
            $dateValue = \PHPExcel\Shared\Date::excelToPHP($cellValue);
            if ($cellValue < 1) {
                // Just the time part
                $dtVal = date('His', $dateValue);
                $dateSet = $dateSet['time'];
            } elseif ($cellValue == floor($cellValue)) {
                // Just the date part
                $dtVal = date('Ymd', $dateValue);
                $dateSet = $dateSet['date'];
            } else {
                // date and time parts
                $dtVal = date('YmdHis', $dateValue);
                $dateSet = $dateSet['dateTime'];
            }
            foreach ( $dateSet as $dateValue ) {
                // Use of substr to extract value at the appropriate group level
                if (substr($dtVal, 0, strlen($dateValue)) == $dateValue) {
                    return true;
                }
            }
        }
        return false;
    }
    
    /**
     * Test if cell value is within a set of values defined by a ruleset
     *
     * @param mixed $cellValue            
     * @param mixed[] $ruleSet            
     * @return boolean
     */
    private static function filterTestInCustomDataSet($cellValue, $ruleSet) {
        $dataSet = $ruleSet['filterRules'];
        $join = $ruleSet['join'];
        $customRuleForBlanks = isset($ruleSet['customRuleForBlanks']) ? $ruleSet['customRuleForBlanks'] : false;
        
        if (!$customRuleForBlanks) {
            // Blank cells are always ignored, so return a FALSE
            if (($cellValue == '') || ($cellValue === null)) {
                return false;
            }
        }
        $returnVal = ($join == AutoFilter\Column::AUTOFILTER_COLUMN_JOIN_AND);
        foreach ( $dataSet as $rule ) {
            if (is_numeric($rule['value'])) {
                // Numeric values are tested using the appropriate operator
                switch ($rule['operator']) {
                    case AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_EQUAL :
                        $retVal = ($cellValue == $rule['value']);
                        break;
                    case AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_NOTEQUAL :
                        $retVal = ($cellValue != $rule['value']);
                        break;
                    case AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_GREATERTHAN :
                        $retVal = ($cellValue > $rule['value']);
                        break;
                    case AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_GREATERTHANOREQUAL :
                        $retVal = ($cellValue >= $rule['value']);
                        break;
                    case AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_LESSTHAN :
                        $retVal = ($cellValue < $rule['value']);
                        break;
                    case AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_LESSTHANOREQUAL :
                        $retVal = ($cellValue <= $rule['value']);
                        break;
                }
            } elseif ($rule['value'] == '') {
                switch ($rule['operator']) {
                    case AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_EQUAL :
                        $retVal = (($cellValue == '') || ($cellValue === null));
                        break;
                    case AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_NOTEQUAL :
                        $retVal = (($cellValue != '') && ($cellValue !== null));
                        break;
                    default :
                        $retVal = true;
                        break;
                }
            } else {
                // String values are always tested for equality, factoring in for wildcards (hence a regexp test)
                $retVal = preg_match('/^' . $rule['value'] . '$/i', $cellValue);
            }
            // If there are multiple conditions, then we need to test both using the appropriate join operator
            switch ($join) {
                case AutoFilter\Column::AUTOFILTER_COLUMN_JOIN_OR :
                    $returnVal = $returnVal || $retVal;
                    // Break as soon as we have a TRUE match for OR joins,
                    // to avoid unnecessary additional code execution
                    if ($returnVal) {
                        return $returnVal;
                    }
                    break;
                case AutoFilter\Column::AUTOFILTER_COLUMN_JOIN_AND :
                    $returnVal = $returnVal && $retVal;
                    break;
            }
        }
        
        return $returnVal;
    }
    
    /**
     * Test if cell date value is matches a set of values defined by a set of months
     *
     * @param mixed $cellValue            
     * @param mixed[] $monthSet            
     * @return boolean
     */
    private static function filterTestInPeriodDateSet($cellValue, $monthSet) {
        // Blank cells are always ignored, so return a FALSE
        if (($cellValue == '') || ($cellValue === null)) {
            return false;
        }
        
        if (is_numeric($cellValue)) {
            $dateValue = date('m', \PHPExcel\Shared\Date::excelToPHP($cellValue));
            if (in_array($dateValue, $monthSet)) {
                return true;
            }
        }
        
        return false;
    }
    
    /**
     * Search/Replace arrays to convert Excel wildcard syntax to a regexp syntax for preg_matching
     *
     * @var array
     */
    private static $fromReplace = array(
    '\*',
    '\?',
    '~~',
    '~.*',
    '~.?' 
    );
    private static $toReplace = array(
    '.*',
    '.',
    '~',
    '\*',
    '\?' 
    );
    
    /**
     * Convert a dynamic rule daterange to a custom filter range expression for ease of calculation
     *
     * @param string $dynamicRuleType            
     * @param
     *            AutoFilter\Column &$filterColumn
     * @return mixed[]
     */
    private function dynamicFilterDateRange($dynamicRuleType, &$filterColumn) {
        $rDateType = \PHPExcel\Calculation\Functions::getReturnDateType();
        \PHPExcel\Calculation\Functions::setReturnDateType(\PHPExcel\Calculation\Functions::RETURNDATE_PHP_NUMERIC);
        $val = $maxVal = null;
        
        $ruleValues = array();
        $baseDate = \PHPExcel\Calculation\DateTime::DATENOW();
        // Calculate start/end dates for the required date range based on current date
        switch ($dynamicRuleType) {
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_LASTWEEK :
                $baseDate = strtotime('-7 days', $baseDate);
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_NEXTWEEK :
                $baseDate = strtotime('-7 days', $baseDate);
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_LASTMONTH :
                $baseDate = strtotime('-1 month', gmmktime(0, 0, 0, 1, date('m', $baseDate), date('Y', $baseDate)));
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_NEXTMONTH :
                $baseDate = strtotime('+1 month', gmmktime(0, 0, 0, 1, date('m', $baseDate), date('Y', $baseDate)));
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_LASTQUARTER :
                $baseDate = strtotime('-3 month', gmmktime(0, 0, 0, 1, date('m', $baseDate), date('Y', $baseDate)));
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_NEXTQUARTER :
                $baseDate = strtotime('+3 month', gmmktime(0, 0, 0, 1, date('m', $baseDate), date('Y', $baseDate)));
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_LASTYEAR :
                $baseDate = strtotime('-1 year', gmmktime(0, 0, 0, 1, date('m', $baseDate), date('Y', $baseDate)));
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_NEXTYEAR :
                $baseDate = strtotime('+1 year', gmmktime(0, 0, 0, 1, date('m', $baseDate), date('Y', $baseDate)));
                break;
        }
        
        switch ($dynamicRuleType) {
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_TODAY :
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_YESTERDAY :
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_TOMORROW :
                $maxVal = (int) \PHPExcel\Shared\Date::PHPtoExcel(strtotime('+1 day', $baseDate));
                $val = (int) \PHPExcel\Shared\Date::PHPToExcel($baseDate);
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_YEARTODATE :
                $maxVal = (int) \PHPExcel\Shared\Date::PHPtoExcel(strtotime('+1 day', $baseDate));
                $val = (int) \PHPExcel\Shared\Date::PHPToExcel(gmmktime(0, 0, 0, 1, 1, date('Y', $baseDate)));
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_THISYEAR :
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_LASTYEAR :
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_NEXTYEAR :
                $maxVal = (int) \PHPExcel\Shared\Date::PHPToExcel(gmmktime(0, 0, 0, 31, 12, date('Y', $baseDate)));
                ++$maxVal;
                $val = (int) \PHPExcel\Shared\Date::PHPToExcel(gmmktime(0, 0, 0, 1, 1, date('Y', $baseDate)));
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_THISQUARTER :
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_LASTQUARTER :
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_NEXTQUARTER :
                $thisMonth = date('m', $baseDate);
                $thisQuarter = floor(--$thisMonth / 3);
                $maxVal = (int) \PHPExcel\Shared\Date::PHPtoExcel(gmmktime(0, 0, 0, date('t', $baseDate), (1 + $thisQuarter) * 3, date('Y', $baseDate)));
                ++$maxVal;
                $val = (int) \PHPExcel\Shared\Date::PHPToExcel(gmmktime(0, 0, 0, 1, 1 + $thisQuarter * 3, date('Y', $baseDate)));
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_THISMONTH :
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_LASTMONTH :
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_NEXTMONTH :
                $maxVal = (int) \PHPExcel\Shared\Date::PHPtoExcel(gmmktime(0, 0, 0, date('t', $baseDate), date('m', $baseDate), date('Y', $baseDate)));
                ++$maxVal;
                $val = (int) \PHPExcel\Shared\Date::PHPToExcel(gmmktime(0, 0, 0, 1, date('m', $baseDate), date('Y', $baseDate)));
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_THISWEEK :
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_LASTWEEK :
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_NEXTWEEK :
                $dayOfWeek = date('w', $baseDate);
                $val = (int) \PHPExcel\Shared\Date::PHPToExcel($baseDate) - $dayOfWeek;
                $maxVal = $val + 7;
                break;
        }
        
        switch ($dynamicRuleType) {
            // Adjust Today dates for Yesterday and Tomorrow
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_YESTERDAY :
                --$maxVal;
                --$val;
                break;
            case AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_TOMORROW :
                ++$maxVal;
                ++$val;
                break;
        }
        
        // Set the filter column rule attributes ready for writing
        $filterColumn->setAttributes(array(
        'val' => $val,
        'maxVal' => $maxVal 
        ));
        
        // Set the rules for identifying rows for hide/show
        $ruleValues[] = array(
        'operator' => AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_GREATERTHANOREQUAL,
        'value' => $val 
        );
        $ruleValues[] = array(
        'operator' => AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_LESSTHAN,
        'value' => $maxVal 
        );
        \PHPExcel\Calculation\Functions::setReturnDateType($rDateType);
        
        return array(
        'method' => 'filterTestInCustomDataSet',
        'arguments' => array(
        'filterRules' => $ruleValues,
        'join' => AutoFilter\Column::AUTOFILTER_COLUMN_JOIN_AND 
        ) 
        );
    }
    private function calculateTopTenValue($columnID, $startRow, $endRow, $ruleType, $ruleValue) {
        $range = $columnID . $startRow . ':' . $columnID . $endRow;
        $dataValues = \PHPExcel\Calculation\Functions::flattenArray($this->workSheet->rangeToArray($range, null, true, false));
        
        $dataValues = array_filter($dataValues);
        if ($ruleType == AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_TOPTEN_TOP) {
            rsort($dataValues);
        } else {
            sort($dataValues);
        }
        
        return array_pop(array_slice($dataValues, 0, $ruleValue));
    }
    
    /**
     * Apply the AutoFilter rules to the AutoFilter Range
     *
     * @throws \PHPExcel\Exception
     * @return AutoFilter
     */
    public function showHideRows() {
        list($rangeStart, $rangeEnd) = \PHPExcel\Cell::rangeBoundaries($this->range);
        
        // The heading row should always be visible
        // echo 'AutoFilter Heading Row ', $rangeStart[1],' is always SHOWN',PHP_EOL;
        $this->workSheet->getRowDimension($rangeStart[1])->setVisible(true);
        
        $columnFilterTests = array();
        foreach ( $this->columns as $columnID => $filterColumn ) {
            $rules = $filterColumn->getRules();
            switch ($filterColumn->getFilterType()) {
                case AutoFilter\Column::AUTOFILTER_FILTERTYPE_FILTER :
                    $ruleValues = array();
                    // Build a list of the filter value selections
                    foreach ( $rules as $rule ) {
                        $ruleType = $rule->getRuleType();
                        $ruleValues[] = $rule->getValue();
                    }
                    // Test if we want to include blanks in our filter criteria
                    $blanks = false;
                    $ruleDataSet = array_filter($ruleValues);
                    if (count($ruleValues) != count($ruleDataSet)) {
                        $blanks = true;
                    }
                    if ($ruleType == AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_FILTER) {
                        // Filter on absolute values
                        $columnFilterTests[$columnID] = array(
                        'method' => 'filterTestInSimpleDataSet',
                        'arguments' => array(
                        'filterValues' => $ruleDataSet,
                        'blanks' => $blanks 
                        ) 
                        );
                    } else {
                        // Filter on date group values
                        $arguments = array(
                        'date' => array(),
                        'time' => array(),
                        'dateTime' => array() 
                        );
                        foreach ( $ruleDataSet as $ruleValue ) {
                            $date = $time = '';
                            if ((isset($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_YEAR])) && ($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_YEAR] !== '')) {
                                $date .= sprintf('%04d', $ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_YEAR]);
                            }
                            if ((isset($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_MONTH])) && ($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_MONTH] != '')) {
                                $date .= sprintf('%02d', $ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_MONTH]);
                            }
                            if ((isset($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_DAY])) && ($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_DAY] !== '')) {
                                $date .= sprintf('%02d', $ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_DAY]);
                            }
                            if ((isset($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_HOUR])) && ($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_HOUR] !== '')) {
                                $time .= sprintf('%02d', $ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_HOUR]);
                            }
                            if ((isset($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_MINUTE])) && ($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_MINUTE] !== '')) {
                                $time .= sprintf('%02d', $ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_MINUTE]);
                            }
                            if ((isset($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_SECOND])) && ($ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_SECOND] !== '')) {
                                $time .= sprintf('%02d', $ruleValue[AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DATEGROUP_SECOND]);
                            }
                            $dateTime = $date . $time;
                            $arguments['date'][] = $date;
                            $arguments['time'][] = $time;
                            $arguments['dateTime'][] = $dateTime;
                        }
                        // Remove empty elements
                        $arguments['date'] = array_filter($arguments['date']);
                        $arguments['time'] = array_filter($arguments['time']);
                        $arguments['dateTime'] = array_filter($arguments['dateTime']);
                        $columnFilterTests[$columnID] = array(
                        'method' => 'filterTestInDateGroupSet',
                        'arguments' => array(
                        'filterValues' => $arguments,
                        'blanks' => $blanks 
                        ) 
                        );
                    }
                    break;
                case AutoFilter\Column::AUTOFILTER_FILTERTYPE_CUSTOMFILTER :
                    $customRuleForBlanks = false;
                    $ruleValues = array();
                    // Build a list of the filter value selections
                    foreach ( $rules as $rule ) {
                        $ruleType = $rule->getRuleType();
                        $ruleValue = $rule->getValue();
                        if (!is_numeric($ruleValue)) {
                            // Convert to a regexp allowing for regexp reserved characters, wildcards and escaped wildcards
                            $ruleValue = preg_quote($ruleValue);
                            $ruleValue = str_replace(self::$fromReplace, self::$toReplace, $ruleValue);
                            if (trim($ruleValue) == '') {
                                $customRuleForBlanks = true;
                                $ruleValue = trim($ruleValue);
                            }
                        }
                        $ruleValues[] = array(
                        'operator' => $rule->getOperator(),
                        'value' => $ruleValue 
                        );
                    }
                    $join = $filterColumn->getJoin();
                    $columnFilterTests[$columnID] = array(
                    'method' => 'filterTestInCustomDataSet',
                    'arguments' => array(
                    'filterRules' => $ruleValues,
                    'join' => $join,
                    'customRuleForBlanks' => $customRuleForBlanks 
                    ) 
                    );
                    break;
                case AutoFilter\Column::AUTOFILTER_FILTERTYPE_DYNAMICFILTER :
                    $ruleValues = array();
                    foreach ( $rules as $rule ) {
                        // We should only ever have one Dynamic Filter Rule anyway
                        $dynamicRuleType = $rule->getGrouping();
                        if (($dynamicRuleType == AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_ABOVEAVERAGE) || ($dynamicRuleType == AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_BELOWAVERAGE)) {
                            // Number (Average) based
                            // Calculate the average
                            $averageFormula = '=AVERAGE(' . $columnID . ($rangeStart[1] + 1) . ':' . $columnID . $rangeEnd[1] . ')';
                            $average = \PHPExcel\Calculation::getInstance()->calculateFormula($averageFormula, null, $this->workSheet->getCell('A1'));
                            // Set above/below rule based on greaterThan or LessTan
                            $operator = ($dynamicRuleType === AutoFilter\Column\Rule::AUTOFILTER_RULETYPE_DYNAMIC_ABOVEAVERAGE) ? AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_GREATERTHAN : AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_LESSTHAN;
                            $ruleValues[] = array(
                            'operator' => $operator,
                            'value' => $average 
                            );
                            $columnFilterTests[$columnID] = array(
                            'method' => 'filterTestInCustomDataSet',
                            'arguments' => array(
                            'filterRules' => $ruleValues,
                            'join' => AutoFilter\Column::AUTOFILTER_COLUMN_JOIN_OR 
                            ) 
                            );
                        } else {
                            // Date based
                            if ($dynamicRuleType{0} == 'M' || $dynamicRuleType{0} == 'Q') {
                                // Month or Quarter
                                sscanf($dynamicRuleType, '%[A-Z]%d', $periodType, $period);
                                if ($periodType == 'M') {
                                    $ruleValues = array(
                                    $period 
                                    );
                                } else {
                                    --$period;
                                    $periodEnd = (1 + $period) * 3;
                                    $periodStart = 1 + $period * 3;
                                    $ruleValues = range($periodStart, $periodEnd);
                                }
                                $columnFilterTests[$columnID] = array(
                                'method' => 'filterTestInPeriodDateSet',
                                'arguments' => $ruleValues 
                                );
                                $filterColumn->setAttributes(array());
                            } else {
                                // Date Range
                                $columnFilterTests[$columnID] = $this->dynamicFilterDateRange($dynamicRuleType, $filterColumn);
                                break;
                            }
                        }
                    }
                    break;
                case AutoFilter\Column::AUTOFILTER_FILTERTYPE_TOPTENFILTER :
                    $ruleValues = array();
                    $dataRowCount = $rangeEnd[1] - $rangeStart[1];
                    foreach ( $rules as $rule ) {
                        // We should only ever have one Dynamic Filter Rule anyway
                        $toptenRuleType = $rule->getGrouping();
                        $ruleValue = $rule->getValue();
                        $ruleOperator = $rule->getOperator();
                    }
                    if ($ruleOperator === AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_TOPTEN_PERCENT) {
                        $ruleValue = floor($ruleValue * ($dataRowCount / 100));
                    }
                    if ($ruleValue < 1) {
                        $ruleValue = 1;
                    }
                    if ($ruleValue > 500) {
                        $ruleValue = 500;
                    }
                    
                    $maxVal = $this->calculateTopTenValue($columnID, $rangeStart[1] + 1, $rangeEnd[1], $toptenRuleType, $ruleValue);
                    
                    $operator = ($toptenRuleType == AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_TOPTEN_TOP) ? AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_GREATERTHANOREQUAL : AutoFilter\Column\Rule::AUTOFILTER_COLUMN_RULE_LESSTHANOREQUAL;
                    $ruleValues[] = array(
                    'operator' => $operator,
                    'value' => $maxVal 
                    );
                    $columnFilterTests[$columnID] = array(
                    'method' => 'filterTestInCustomDataSet',
                    'arguments' => array(
                    'filterRules' => $ruleValues,
                    'join' => AutoFilter\Column::AUTOFILTER_COLUMN_JOIN_OR 
                    ) 
                    );
                    $filterColumn->setAttributes(array(
                    'maxVal' => $maxVal 
                    ));
                    break;
            }
        }
        
        // echo 'Column Filter Test CRITERIA',PHP_EOL;
        // var_dump($columnFilterTests);
        //
        // Execute the column tests for each row in the autoFilter range to determine show/hide,
        for($row = $rangeStart[1] + 1; $row <= $rangeEnd[1]; ++$row) {
            // echo 'Testing Row = ', $row,PHP_EOL;
            $result = true;
            foreach ( $columnFilterTests as $columnID => $columnFilterTest ) {
                // echo 'Testing cell ', $columnID.$row,PHP_EOL;
                $cellValue = $this->workSheet->getCell($columnID . $row)->getCalculatedValue();
                // echo 'Value is ', $cellValue,PHP_EOL;
                // Execute the filter test
                $result = $result && call_user_func_array(array(
                '\\PHPExcel\\Worksheet\\AutoFilter',
                $columnFilterTest['method'] 
                ), array(
                $cellValue,
                $columnFilterTest['arguments'] 
                ));
                // echo (($result) ? 'VALID' : 'INVALID'),PHP_EOL;
                // If filter test has resulted in FALSE, exit the loop straightaway rather than running any more tests
                if (!$result) {
                    break;
                }
            }
            // Set show/hide for the row based on the result of the autoFilter result
            // echo (($result) ? 'SHOW' : 'HIDE'),PHP_EOL;
            $this->workSheet->getRowDimension($row)->setVisible($result);
        }
        
        return $this;
    }
    
    /**
     * Implement PHP __clone to create a deep clone, not just a shallow copy.
     */
    public function __clone() {
        $vars = get_object_vars($this);
        foreach ( $vars as $key => $value ) {
            if (is_object($value)) {
                if ($key == 'workSheet') {
                    // Detach from worksheet
                    $this->{$key} = null;
                } else {
                    $this->{$key} = clone $value;
                }
            } elseif ((is_array($value)) && ($key == 'columns')) {
                // The columns array of \PHPExcel\Worksheet\AutoFilter objects
                $this->{$key} = array();
                foreach ( $value as $k => $v ) {
                    $this->{$key}[$k] = clone $v;
                    // attach the new cloned Column to this new cloned Autofilter object
                    $this->{$key}[$k]->setParent($this);
                }
            } else {
                $this->{$key} = $value;
            }
        }
    }
    
    /**
     * toString method replicates previous behavior by returning the range if object is
     * referenced as a property of its parent.
     */
    public function __toString() {
        return (string) $this->range;
    }
}
